Disclosure: This page may contain affiliate links. Read our full disclosure policy.

Medik8
Liquid Peptides

Versus

PSA Skincare
Visible Improvement Peptides & Niacinamide Serum

Product category and function

Liquid Peptides

Visible Improvement Peptides & Niacinamide Serum

Serums/Treatments	Serums/Treatments
Concentrated formulas for hydrating and addressing skin issues.	Concentrated formulas for hydrating and addressing skin issues.
----	----

Ingredient highlights

Liquid Peptides

Visible Improvement Peptides & Niacinamide Serum

Ingredient info	Ingredient info
Alcohol-free Paraben-free SLS-free Mica-free Fragrance-free vegan cruelty-free	Alcohol-free Paraben-free SLS-free Mica-free Fragrance-free cruelty-free

Full ingredient list

Liquid Peptides

Visible Improvement Peptides & Niacinamide Serum

No. of common ingredients = 0
Water, glycerin, butylene glycol, inulin, sodium hyaluronate, panthenol, alpha-glucan oligosaccharide, carnosine, carbomer, polysorbate 20, caprylyl glycol, phenoxyethanol, hydroxypropyl cyclodextrin, dunaliella salina extract, ethylhexylglycerin, citric acid, palmitoyl tripeptide-5, sodium benzoate, acetyl hexapeptide-8, tetrapeptide-21, pentapeptide-18, palmitoyl tripeptide-1, pantolactone, palmitoyl tripeptide-38, palmitoyl tetrapeptide-7, glyceryl caprylate, lactic acid/glycolic acid copolymer, polyvinyl alcohol, phenylpropanol, copper palmitoyl heptapeptide-14, heptapeptide-15 palmitate, potassium sorbate, xanthan gum 15	Aqua (water), niacinamide, glycerin, propanediol, ethyl macadamiate, isodecyl neopentanoate, butylene glycol, c12-15 alkyl benzoate, polysorbate 20, acetyl glucosamine, beta-glucan, saccharomyces/xylinum/black tea ferment, pichia/resveratrol ferment extract, bisabolol, panthenol, tocopheryl acetate, allantoin, ergothioneine, laminaria digitata extract, chlorella vulgaris extract, oxidized glutathione, ubiquinone, tocopherol, dimethyl sulfone, biotin, sea water, dimethyl isosorbide, palmitoyl tripeptide-1, palmitoyl tetrapeptide-7, palmitoyl tripeptide-38, malic acid, sclerotium gum, xanthan gum, carbomer, sodium gluconate, ethylhexylglycerin, hydroxypropyl cyclodextrin, saccharide isomerate, hydroxyethylcellulose, citric acid, sodium hydroxide, sodium citrate, potassium sorbate, phenoxyethanol

No. of common ingredients = 0

Total Number of ingredients = 33

Total Number of ingredients = 44

Water, glycerin, butylene glycol, inulin, sodium hyaluronate, panthenol, alpha-glucan oligosaccharide, carnosine, carbomer, polysorbate 20, caprylyl glycol, phenoxyethanol, hydroxypropyl cyclodextrin, dunaliella salina extract, ethylhexylglycerin, citric acid, palmitoyl tripeptide-5, sodium benzoate, acetyl hexapeptide-8, tetrapeptide-21, pentapeptide-18, palmitoyl tripeptide-1, pantolactone, palmitoyl tripeptide-38, palmitoyl tetrapeptide-7, glyceryl caprylate, lactic acid/glycolic acid copolymer, polyvinyl alcohol, phenylpropanol, copper palmitoyl heptapeptide-14, heptapeptide-15 palmitate, potassium sorbate, xanthan gum

Aqua (water), niacinamide, glycerin, propanediol, ethyl macadamiate, isodecyl neopentanoate, butylene glycol, c12-15 alkyl benzoate, polysorbate 20, acetyl glucosamine, beta-glucan, saccharomyces/xylinum/black tea ferment, pichia/resveratrol ferment extract, bisabolol, panthenol, tocopheryl acetate, allantoin, ergothioneine, laminaria digitata extract, chlorella vulgaris extract, oxidized glutathione, ubiquinone, tocopherol, dimethyl sulfone, biotin, sea water, dimethyl isosorbide, palmitoyl tripeptide-1, palmitoyl tetrapeptide-7, palmitoyl tripeptide-38, malic acid, sclerotium gum, xanthan gum, carbomer, sodium gluconate, ethylhexylglycerin, hydroxypropyl cyclodextrin, saccharide isomerate, hydroxyethylcellulose, citric acid, sodium hydroxide, sodium citrate, potassium sorbate, phenoxyethanol

Notable ingredients

Liquid Peptides

Visible Improvement Peptides & Niacinamide Serum

Soothing: Panthenol

Cell-signaling ingredient: Palmitoyl tetrapeptide-7

Solvent: Water, Butylene glycol, Glycerin, Phenylpropanol

Anti-acne: Niacinamide

Soothing: Niacinamide, Allantoin, Bisabolol, Panthenol

Skin brightening: Niacinamide, Acetyl glucosamine

Load all

Ingredients with their functions

Liquid Peptides

Visible Improvement Peptides & Niacinamide Serum

Water

Also-called: Aqua, Aqua/Water, Water/Aqua/Eau, Aqua/Water/Eau | Function: Skin conditioning, Solvent

Water serves as a fundamental component in skincare products, often listed as the first ingredient, which means it's the most abundant. It acts as a solvent, helping to dissolve other ingredients and facilitate the application and absorption of products.

Glycerin

Also-called: Glycerol | Function: Skin-identical ingredient, Viscosity controlling, Skin protecting, Skin conditioning, Humectant/Moisturizer, Solvent

We don’t have a detailed description of this ingredient yet.

Butylene glycol

Function: Viscosity controlling, Skin conditioning, Humectant/Moisturizer, Solvent

We don’t have a detailed description of this ingredient yet.

Aqua (water)

Also-called: Aqua, Aqua/Water, Water/Aqua/Eau, Aqua/Water/Eau | Function: Skin conditioning, Solvent

Niacinamide

Also-called: Nicotinamide, Vitamin B3 | Function: Anti-acne, Soothing, Skin brightening, Cell-signaling ingredient

Niacinamide, also known as vitamin B3, is a potent skincare ingredient renowned for its wide-ranging benefits.

It helps to strengthen the skin's barrier function, improve skin texture, and reduce the appearance of fine lines and wrinkles. It's also effective in managing acne and reducing redness and inflammation.

Furthermore, it inhibits melanin production, thereby assisting in fading hyperpigmentation and evening out skin tone. Safe for almost all skin types, niacinamide is a versatile ingredient found in various skincare products.

Glycerin

Also-called: Glycerol | Function: Skin-identical ingredient, Viscosity controlling, Skin protecting, Skin conditioning, Humectant/Moisturizer, Solvent